Spinning spindle



Dec. 17, 1935. 1 G, K WADA 2,024,584

\ SPINNING SPINDLE' Filed Au 22, 1934 INVENTOR W BY ATTORNEYS I is2,024,584 srnwmc SPINDLE Gompei Kuwada, Maedani-m Kawabe-gum- JapanApplication August 22, 1934, Serial No. 740,937 i In Japan December 7,1933- i 5 Claims. (01. 2415-4611) My invention relates to a spinningspindle with the object ofholding the bobbln to. the spindle moretightly than by mere surface contact between them, of causing this gripto be tighter 5 at higher speeds and in construction such that eachintegralpart may be separately removable for facile replacement; 7 V Thereference is to be had to the accompanying drawing in which, I

10 Fig.; I is an. elevation of the spindle,

.F'igQII is a front elevation of the spring, Fig. 111 is a sideelevation of thesame, n Fig. IV is a horizontal section of the same, andFig. V is a perspective view'of the top of the spindle wharve showingthe circumferential and 7 vertical grooves into which the springs arepositloned. r

In this drawing I is the spindle wharve, 2 is the spring, 3 is thesaddle to the spring 2, 4 is the cap to the wharve enclosing thesprings, 2 in place, 5 is the opening to the cap through which saddles 3may protrude. In above drawing the same notation indicates the samepart.

' As shown by Fig. Ithe wharve of thespindle is madein two parts, theinner part being grooved circularly at the top and vertically alongitsside in several places, and the outer part made to cap over the innerpart. i i

Figs.II, III and'IV show the construction of the springs that are placedin the abovementioned grooves. These springs bear on their backs thesaddles 3 which are metal pieces clasped over the said springs, theexterior of which is well rounded over. The caplis so constructed thatit fits-tightly over the wharve and over the upper bar of the springsand moreover is provided with openings to admit the spring saddlestoprotrude beyond the exterior surface oi the wharve cap.

As to the working of the spindle, when a bobbin 40 is placed over thespindle thelight' resilience of the springs 2 presses the saddles 3against the inside ofthe bobbin to ensure bobbin at the start to revolvealongwiththe spindle, and as the speed increases the centrifugal forceset up bythe weight of the saddle causes the saddle to press moretightly against the inside of the bobbin; thus further ensuring the gripbetween the bobbin and thespindle. r

In caseany integral part ofthe spring or of 60 the saddle becomesinjured or worn by use, it may be easily-replaced on removalofth'e cap4. I 1

Heretofore there have been spindleswith only springs to assist ingripping thebobbin to the spindle but in such the edges of the'springsrub- 66 p ns against inside of the. bobbin tends to'cause ing the actionof the free pieces,

In myinvention the springs are to provide the 10 means of holding thebobbin lightly enough for its insertion and removal and for fixing thebobbin to its spindle so that the bobbin may revolve with the spindlefrom the very start when the latter is set revolving, a very essential 5point to be assured in spinning of yarn.

Having thus described the principle of the invention what I claim is:--a

1. In aspinning machine spindle, a wharve comprising an inner membergrooved circumfergo entially at its top and vertically along its sideand an outer cap member fitting overthe inner memher, at least oneT-shaped spring having its horizontalbar and its vertical bar positionedin the circumferential and'vertical' grooves 'of the 25 .inner member bythe'cap member, but having its vertical barfree to move within groove ofthe inner member. 2. In a spinning machine spindle, a wharve thevertical comprising an inner member grooved circumfer- 3o entially atits top and vertically along its side and an outer cap member fittingover the inner member, a plurality of T-shaped springs having upperhorizontal bars and vertical curved bars, said horizontal bars and saidverticalbars be- 35 ing positioned respectively in the circumferentialand vertical groovesyof said inner. member, the horizontal bars of saidsprings being held against [the circumferential groove of the innermember Ventially andvertically along its side and an outer cap memberfitting over the inner member, at least one T-shaped spring having itshorizontal bar and its vertical bar positioned, respectively,

in the circumferential and vertical grooves of the inner member by the'cap member, said spring 66 comprising vertical groove of the innermember, and metal saddle pieces secured to the vertical bar of saidspring.

5. In a spinning mac e spindle, a wharve anmnerimem r groovedcircumferentially and .v g and, an outer cap member fitting over thei'rir'ier member, a plurality of ,T-shaped springs having {theirhorizontal bars and their vertical bars positioned in thecircumiere'ntiai and vertical grooves respectively oi 9,024,5s4 I a saidinner member. said springs having their horizontal bars held against thecircumferential groove of the inner member by the cap member but-havingtheir vertical bars tree to move within the vertical groove of the innermember, metal saddle pieces clasped over the vertical bars of thesprings andthe cap'member being provided with apertures into which thesaddle pieces on the vertical bars may'protrude.

' comm xuwam.

